TVM Solver (Time, Value, Money)

This is a solver for problems involving the time value of money (TVM). It emulates the TVM solver on the TI-83+ and TI-84 graphing calculators. The seven TVM variables are as follows. N - The number of payments (you can multiply using a * right in the box) I% - The interest rate, as a percentage. It should NOT be divided by 100. PV - Present value PMT - Periodic payment FV - Future value P/Y - Payments per year C/Y - Times per year that interest is compounded Note that incoming cash are considered positive and outgoing are negative. *I'm pretty sure I've fixed the issue with solving for interest not working